Q. If 3y−y2−x3=−y3 then find dxdy in terms of x and y.Answer: dxdy=
Given Equation Differentiation: We are given the equation 3y−y2−x3=−y3. To find dxdy, we need to differentiate both sides of the equation with respect to x, treating y as a function of x (implicit differentiation).
Left Side Differentiation: Differentiate the left side of the equation with respect to x: dxd(3y−y2−x3). This gives us dxd(3y)−dxd(y2)−dxd(x3).
Differentiate Each Term: Differentiate each term: dxd(3y)=3dxdy, dxd(y2)=2ydxdy using the chain rule, and dxd(x3)=3x2.
Right Side Differentiation: Differentiate the right side of the equation with respect to x: dxd(−y3). This gives us −3y2dxdy using the chain rule.
Combine Differentiated Terms: Combine the differentiated terms to form an equation: 3(dxdy)−2y(dxdy)−3x2=−3y2(dxdy).
Rearrange to Solve: Rearrange the terms to solve for (dxdy): (3−2y−3y2)(dxdy)=3x2.
Factor Out (dxdy): Factor out (dxdy) from the left side of the equation: (dxdy)(3−2y−3y2)=3x2.
Isolate dxdy: Divide both sides by (3−2y−3y2) to isolate dxdy: dxdy=3−2y−3y23x2.
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